Docs
Sellinger developer docs
The Sellinger REST API lets you create and read leads, read activity and agents, and receive webhooks. A hosted MCP connector with 43 tools serves AI assistants. These pages cover the first request, authentication, and the errors and limits you will meet.
Published by Sellinger AI. Numbers and settings checked on 19 October 2026 against the fact register. Report an error.
Start here
| Page | In one line |
|---|---|
| Quickstart | Create a key, add a lead and list leads in three requests. |
| Authentication | Key format, headers, scopes, revocation and webhook signatures. |
| Errors and limits | Status codes, error bodies, rate limits and pagination. |
Which API to use
- v1 (/api/v1): leads, agents, activity and analytics, scoped to the user that owns the key.
- v2 MCP routes (/api/v2/mcp): the team scoped surface that the MCP connector also uses, with scopes and rate limits.
- MCP connector at https://app.sellinger.ai/api/v2/mcp: for Claude and ChatGPT. See the MCP page.
Common questions
Is the API available on every plan?
API access with webhooks is part of the Full Stack bundle and up, according to the [pricing page](/pricing).
Is there an OpenAPI file?
Not yet. These pages and the in-app reference at app.sellinger.ai/docs are written by hand.
Sources and method
Sellinger API code read on 19 October 2026. The in-app reference is at app.sellinger.ai/docs. No OpenAPI file exists yet.
Related: MCP connector, Glossary: sales API, Integrations.
